In this study, a new type of horizontal radiation blade structure is proposed and applied to the very high frequency (VHF) broadband whip antenna. The influence of the radius, length, number of branches of horizontal radiation blade and its distribution on the whip body on the electrical performance of the whip antenna is analysed separately to design a more suitable structure, and then an algorithm optimization of single loading and broadband matching network is carried out for further impedance matching. The simulation and measured results both show that compared with the existing broadband whip antenna, the gain and efficiency of the proposed antenna are significantly improved while maintaining a good voltage standing wave ratio (VSWR) over the frequency band of 30–300 MHz, all the VSWR are <3 with an average value of 2.0; all the maximum gain are >−3.5 dB, with an average value of 2.2 dB; and all the efficiency are >15%, with an average value of 47.7%; the pattern deviation in higher frequency is also suppressed to some extent. The proposed antenna has small size, wider bandwidth and higher radiation performance, which is suitable for vehicle-borne and ship-borne VHF communication.

中文翻译：

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装有辐射叶片的增益提高的VHF宽带鞭状天线

在这项研究中，提出了一种新型的水平辐射叶片结构，并将其应用于甚高频（VHF）宽带鞭状天线。分别分析了水平辐射叶片的半径，长度，分支数及其分布对鞭体的影响，以设计一种更合适的结构，然后对单载荷和宽带算法进行了优化。进行匹配网络以进一步进行阻抗匹配。仿真和测量结果均表明，与现有的宽带鞭状天线相比，拟议天线的增益和效率得到了显着提高，同时在30-300 MHz频段上保持了良好的电压驻波比（VSWR），所有VSWR <3，平均值为2.0；所有最大增益均> -3.5 dB，平均值为2.2 dB；所有效率> 15％，平均值为47.7％；较高频率的图案偏差也得到了一定程度的抑制。所提出的天线尺寸小，带宽更宽，辐射性能更高，适用于车载和船载VHF通信。